Russian Foreign Minister Lavrov: Escalation of tension on Korea peninsula is unacceptable

Russian Foreign Ministry

In addition:

• Russian Foreign minister Lavrov discussed Korea, Ukraine, with US's Tillerson on a phone call
• Told Tillerson that escalation of tension on Korea Pennisula is unacceptable
• Moscow demand diplomatic property seized by USA

I wonder who initiated the call?

Over the weekend Trump said Tillerson could "be a little bit tougher" at times, but also insisted the two have a solid relationship.